The exact number of Inquisitors in *Star Wars* is uncertain, but twelve are known in canon. Each had a distinct origin, often as former Jedi or Force-sensitives turned dark side agents. The Grand Inquisitor, once a Jedi Temple Guard, led the group. Other notable members include the cunning Second Sister, the vengeful Third Sister (Reva), and combat-oriented figures like the Fifth and Sixth Brothers. Characters like the Ninth Sister and Tenth Brother were driven by fear and disillusionment, while others like the Fourth, Eleventh, and Twelfth Brothers remain more mysterious. Together, they played major roles across *Star Wars Rebels*, *Jedi: Fallen Order*, and various expanded universe content.